United Launch Alliance
Countdown to launch

This Atlas V 551 mission by United Launch Alliance is scheduled to launch from Cape Canaveral SFS, FL, USA. This communications mission targets Low Earth Orbit. The Atlas rocket family has been instrumental in modern space access, representing decades of engineering refinement in propulsion, guidance systems, and structural design.
Every rocket launch involves precise coordination between the launch vehicle, payload, ground systems, and range safety. The launch window is carefully calculated based on orbital mechanics — for missions targeting the International Space Station, the window may be only seconds long, while interplanetary missions can have windows lasting weeks. Weather conditions, including upper-level winds, lightning risk, and cloud ceiling, are monitored up until the final moments before ignition. Space weather conditions from solar activity can also affect launch decisions, as high radiation levels may pose risks to satellite electronics.
For more launch information, visit the full launch schedule, track the International Space Station where many missions are headed, or browse launch photography in the NASA gallery.
Amazon Leo, formerly known as Project Kuiper, is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, this constellation will be managed by Kuiper Systems LLC, a subsidiary of Amazon. This constellation is planned to be composed of 3,276 satellites. The satellites are projected to be placed in 98 orbital planes in three orbital layers, one at 590 km, 610 km and 630 km altitude. 29 satellites are carried on this launch.
Vehicle
Family
Variant
Window Opens
Window Closes
Webcast will be available closer to launch
Pad
Space Launch Complex 41
Location
Cape Canaveral SFS, FL, USA
Country
USA
Coordinates
28.58341025, -80.58303644

United Launch Alliance
Commercial
Country
USA

Amazon Leo
Amazon Leo is a satellite internet constellation aimed at providing high-speed, low-latency broadband connectivity to underserved and remote areas globally. The project involves deploying a constellation of low Earth orbit (LEO) satellites to create a satellite internet network capable of delivering reliable internet access.
Current date is a placeholder or rough estimation based on unreliable or interpreted sources.